racer: I think you’ve got it covered. You
probably already get glutamine from protein
products, but you might want to try adding
a large dose before workouts. You could also
try DHEA - it helps for some people; others not. If after all that stuff you are taking
you still don’t have enough mental focus, then
try increasing the dosages of everything. If
that still isn’t good enough, then you’ve
got bigger problems than I can solve. 
uhhh, what was the question again?